Datasheet > HD66751

HD66751

更新时间： 2024-02-10 05:31:19

品牌	Logo	应用领域
日立 - HITACHI		驱动器控制器
页数	文件大小	规格书
96页	2057K
描述
128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

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HD66751 数据手册

Preliminary

HD66750/1

(128 x 128-dot Graphics LCD Controller/Driver with

Four-grayscale Functions)

Rev 0.7

July 26th, 1999

Description

The HD66750/1, dot-matrix graphics LCD controller and driver LSI, displays 128-by-128-dot graphics

for four monochrome grayscales. Since the HD66750/1 incorporates bit-operation functions and a 16-bit

high-speed bus interface, it enables efficient data transfer and high-speed rewriting of data in the graphics

RAM. The following functions allow the user to easily see a variety of information: a smooth scroll

display function that fixed-displays a part of the graphics icons and perform verticalsmooth scrollingof the

remaining bit-map areas, a double-height display function, and a hardware-supported window cursor

display function.

The HD66750/1 has various functions to reduce the power consumption of an LCD system such as low-

voltage operation of 1.8 V min., a booster to generate maximum seven-times LCD drive voltage from the

supplied voltage, and voltage-followers to decrease the direct current flow in the LCD drive bleeder-

resistors. Combining these hardware functions with software functions, such as a partial display with

low-duty drive and standby and sleep modes, allows precise power control. The HD66750/1 is suitable

for any mid-sized or small portable battery-driven product requiring long-term drivingcapabilities, such as

digital cellular phones supporting a WWW browser, bidirectional pagers, and small PDAs.

Features

128 ´ 128-dot graphics display LCD controller/driver for four monochrome grayscales

Fixed display of graphics icons (pictograms)

16-/8-bit high-speed bus interface capability

Bit-operation functions for graphics processing incorporated:

Ñ Write-data mask function in bit units

Ñ Bit rotation function

Ñ Bit logic-operation function

Low-power operation support:

Ñ Vcc = 1.8 to 3.6 V (low voltage)

Ñ V_LCD= 5 to 15.5 V (liquid crystal drive voltage)

Ñ Two-, five-, six-, or seven-times booster for liquid crystal drive voltage

Ñ 64-step contrast adjuster and voltage followers to decrease direct current flow in the LCD drive

bleeder-resistors

12 3 4 5 6 7...96

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